This website has entries for James and Sarah
www.mackintosh.org.au (Mackintosh Families in Australia)
It shows her her parents as Thomas CHALMERS b. Cal 1862, Glasgow, LKS, SCT, d. 18 Apr 1939, Waverley, NSW, AUS and Sarah Purcell MCINTOSH b. 31 Mar 1861, Glasgow, LKS, SCT, d. 6 Mar 1915, Wentworth Falls, NSW, AUS. It lists eight children.
Father of Thomas was Samuel CHALMERS.
Mother of Sarah Purcell McIntosh was Mary BLAIR b. Cal 1842, Glasgow, LKS, SCT. Seven children listed.
No pre marriage information on James Andrew, some later electoral roll information provided.